Register five new survialists, and set all their skill points to Chop. Put them in your party. Enter the Labyrinth, go north twice, then east. Go though the shortcut. Note: The shortcut must be activated from the other side before it is useable from this side. Next, go east, then north, and repeatedly press A until you reach your daily limit. After that, go back to town. Sell all the items, and sleep until morning. Repeat this until you have as much money as desired.